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Polarizing Plate Beam Splitters

Polarizing Plate Beamsplitters

1. Substrates

 

- Material: UV fused silica or BK-7
- Clear Aperture: Larger than 85%

- Surface Quality (Scratch-Dig): 10-5 for regular plate windows 60-40 for super thin plate windows

- Surface Flatness: λ/10 @ 633nm for regular plate windows, λ/10 per mm @ 633nm for super thin plate windows

- Thickness: 0.25" ± 0.01" for regular plate windows 0.15mm ± 0.02mm for super thin plate windows

- Bevel: < 0.5mm @ 45˚ typical

2. Transmitted Wavefront Error: λ/8 at 633nm for regular plate windows, > λ/4 per mm for super thin plate windows

3. Damage Threshold: 10 J/cm2, 20ns, 20Hz @ 1064nm; 1 MW/cm2, CW @ 1064nm

 

Polarizing plate beamsplitters (PPBS) separates input beam into two beams by reflecting S-polarization beam and transmitting P-polarization. These are an ideal choice for high power laser application which requires high damage threshold. Spectral Optics provide these PPBS for Brewster's angle (56°) and for 45°. The Brewster's angle PPBS give higher extinction ratio but the reflected beam has this Brewster's angle. The 45° angle PPBS have lower extinction ratio but make it easy to use in the optical setup and also can be used as beam combiners. These PPBS are mostly used for high power Nd:YAG laser applications but Spectral Optics can provide any wavelength PPBS on customer's request.

 

 

 

 

Regular Plate

λ (nm)

AOI (°)

Material

Tp (%)

Tp/Ts

Size

Part Number

Price ($ USD)

248 56 ± 3 UV FS 85 100/1 1" X 1/4" PPBS-248-1025-FS-56 $1050
2" X 1/4" PPBS-248-2025-FS-56 $1435
266 1" X 1/4" PPBS-266-1025-FS-56 $1050
2" X 1/4" PPBS-266-2025-FS-56 $1435
355 90 1" X 1/4" PPBS-355-1025-FS-56 $630
2" X 1/4" PPBS-355-2025-FS-56 $995
532 56 ± 3 BK-7 95 200/1 1" X 1/4" PPBS-532-1025-BK-56 $375
2" X 1/4" PPBS-532-2025-BK-56 $520
45 > 96 500/1 1" X 1/4" PPBS-532-1025-BK-45 $495
2" X 1/4" PPBS-532-2025-BK-45 $885
1064 56 ± 3 BK-7 95 200/1 1" X 1/4" PPBS-1064-1025-BK-56 $325
2" X 1/4" PPBS-1064-2025-BK-56 $455
45 > 97 500/1 1" X 1/4" PPBS-1064-1025-BK-45 $495
2" X 1/4" PPBS-1064-2025-BK-45 $845

 

Super Thin Plate

λ (nm)

AOI (°)

Material

Tp (%)

Tp/Ts

Size

Part Number

Price ($ USD)

532 56 ± 3 BK7 95 200/1 25mm STPPBS-532-025-BK-56 $275
45 >96 500/1 STPPBS-532-025-BK-45 $395
1064 56 ± 3 95 200/1 STPPBS-1064-025-BK-56 $225
45 >97 500/1 STPPBS-1064-025-BK-45 $345

 

NOTE:

 

1. The selection of the substrate material is dependent on the wavelength.

2. Please describe your custom requirements when you contact us.

 

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